[Solved] Consider this code snippet: uint32_t count = ulTaskNotifyTake(pdFALSE, portMAX_DELAY); // Assume 3 notifications were sent before this call What will be the value of count after this call? | FreeRTOS

FreeRTOS - Task Notifications

Consider this code snippet:

uint32_t count = ulTaskNotifyTake(pdFALSE, portMAX_DELAY);
// Assume 3 notifications were sent before this call

What will be the value of count after this call?

A1

B0

C3

DportMAX_DELAY

Step-by-Step Solution

Solution:

Step 1: Analyze xClearCountOnExit parameter
pdFALSE means the notification count is not cleared on exit, so it counts all notifications received.
Step 2: Understand the count returned
Since 3 notifications were sent before, ulTaskNotifyTake() returns the total count, which is 3.
Final Answer:
3 -> Option C
Quick Check:
pdFALSE keeps count, so count = 3 [OK]

Quick Trick: pdFALSE keeps count, so returns total notifications [OK]

Common Mistakes:

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